The most important thing to me here is that the theological or philosophical debate over the "true start" of personhood is one that should have no bearing on the legality of a woman's choice to do what she wants with her body. The penumbral rights to privacy in the 4th, 5th and 9th amendments and enumerated by the 14th amendment to our constitution protect American citizens' rights to privacy, regardless of what some people's god tells them. So it's not about whether you think it's right or wrong, it's the legal precedent. Also, I guarantee you women aren't seeking out abortions because they're fun, or so they can keep sleeping around bareback- it's never an easy decision to make, but in the end it is one that should be the woman's and not the government or a group of men in suits thumping bibles.